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Rollercoaster · 20-06-2006, 10:51 AM

No!! that is wrong
RED wire 12v
Yellow Wire 5v
Black wires Ground.

so if u connect between the 12v and 5v rails thenu get a affective voltage potential of 7v
thus u have no good combination to connect LEDS... ie if u connect 2 LEDS then the req voltage is 6v so they are over voltaged and if u connect 3 LEDs then the req voltage is 9v that is under voltage and they will be DIM.

COnnect to either the yellow and black(2LEDS) or Red and black(4LEDs) rails for best results.
ANd please be aware the LEDs do not produce light via HEAT so if they are hot to touch or u can see a yellow bright part in themiddle then they are over voltaged.

And rememebr a very basic thing.. that resisters dont drop the potential but the current. for eg. if u connect one LED and one Resistor in series to 12v rail then the effective voltage at the led pins is still 12v. so u either need to use a voltage regulator or add potential.(this can be done by adding more LEDs or Diodes).

oK. Kool

EDIT: i just noticed the 3Kv resistor.. 3Kv???? dude I hope u ment 3Kohms or mate u are a -gone-case- in electronics.

man Kv means kilo volts as in One thousand Volts.. 3Kv=3000volts, and did u know the comp runs at 12v max LOL.
ALso 3Kohms is like 3000ohms that is too much for thia application. it should be in few ohms.
I will give u a good advice. Buy a "Linear Potentiomenter" of about 1Kohms (it is cheap) and attach it in series with a 100ohms resistor to the LEDs. Voila.. u have your own DIMMER of the LEDS. now u can change the brightness anytime.

20-06-2006, 10:51 AM	#9 (permalink)
Rollercoaster -The BlacKCoaT Operative- Join Date: Mar 2005 Location: Dehradun, India Posts: 1,205	Re: Please rate my PC Case Modification.. No!! that is wrong RED wire 12v Yellow Wire 5v Black wires Ground. so if u connect between the 12v and 5v rails thenu get a affective voltage potential of 7v thus u have no good combination to connect LEDS... ie if u connect 2 LEDS then the req voltage is 6v so they are over voltaged and if u connect 3 LEDs then the req voltage is 9v that is under voltage and they will be DIM. COnnect to either the yellow and black(2LEDS) or Red and black(4LEDs) rails for best results. ANd please be aware the LEDs do not produce light via HEAT so if they are hot to touch or u can see a yellow bright part in themiddle then they are over voltaged. And rememebr a very basic thing.. that resisters dont drop the potential but the current. for eg. if u connect one LED and one Resistor in series to 12v rail then the effective voltage at the led pins is still 12v. so u either need to use a voltage regulator or add potential.(this can be done by adding more LEDs or Diodes). oK. Kool EDIT: i just noticed the 3Kv resistor.. 3Kv???? dude I hope u ment 3Kohms or mate u are a -gone-case- in electronics. man Kv means kilo volts as in One thousand Volts.. 3Kv=3000volts, and did u know the comp runs at 12v max LOL. ALso 3Kohms is like 3000ohms that is too much for thia application. it should be in few ohms. I will give u a good advice. Buy a "Linear Potentiomenter" of about 1Kohms (it is cheap) and attach it in series with a 100ohms resistor to the LEDs. Voila.. u have your own DIMMER of the LEDS. now u can change the brightness anytime. __________________ -------------------------------------------- Holding my last breath, safe inside myself..... -------------------------------------------- I dont use my computer. I misuse it- रोलरकोस्टर Last edited by Rollercoaster; 20-06-2006 at 11:06 AM.